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1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CC_OUTPUT_OVERLAY_PROCESSOR_H_ | |
6 #define CC_OUTPUT_OVERLAY_PROCESSOR_H_ | |
7 | |
8 #include "base/basictypes.h" | |
9 #include "base/memory/scoped_ptr.h" | |
10 #include "cc/output/overlay_candidate.h" | |
11 #include "cc/quads/render_pass.h" | |
12 | |
13 namespace cc { | |
14 class OutputSurface; | |
15 class ResourceProvider; | |
16 | |
17 class OverlayProcessor { | |
18 public: | |
19 class Strategy { | |
20 public: | |
21 virtual ~Strategy() {} | |
22 // Returns false if the strategy cannot be made to work with the | |
23 // current set of render passes. Returns true if the strategy was successful | |
24 // and adds any additional passes necessary to represent overlays to | |
25 // |render_passes_in_draw_order|. | |
26 virtual bool Attempt(RenderPassList* render_passes_in_draw_order, | |
27 OverlayCandidateList* candidates) = 0; | |
28 }; | |
29 typedef ScopedPtrVector<Strategy> StrategyList; | |
30 | |
31 OverlayProcessor(OutputSurface* surface, ResourceProvider* resource_provider); | |
32 virtual ~OverlayProcessor(); | |
33 // Virtual to allow testing different strategies. | |
34 virtual void Initialize(); | |
35 | |
36 void ProcessForOverlays(RenderPassList* render_passes_in_draw_order, | |
37 OverlayCandidateList* candidate_list); | |
38 | |
39 protected: | |
40 StrategyList strategies_; | |
41 OutputSurface* surface_; | |
42 ResourceProvider* resource_provider_; | |
43 | |
44 private: | |
45 DISALLOW_COPY_AND_ASSIGN(OverlayProcessor); | |
46 }; | |
47 | |
48 } // namespace cc | |
49 | |
50 #endif // CC_OUTPUT_OVERLAY_PROCESSOR_H_ | |
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